Lagiacrus is a blue Leviathan that mostly dwells in the sea/deep bodies of water and comes onto beaches to sunbathe. It has a hood-like crest on its neck to aid in sunbathing. Lagiacrus is the flagship monster of Monster Hunter 3.

Nargacuga is the main flagship monster of Monster Hunter Portable 2nd G and Monster Hunter Freedom Unite. It is infamously known for its bladed wings and tail slams. It has black scales, black fur and nightmarish red eyes, giving it the look and style of a predatory black panther. Its dark, feral appearance suggests that it may mainly be a nocturnal predator.